Annotation of OpenXM_contrib2/asir2018/engine/lmi.c, Revision 1.1
1.1 ! noro 1: /*
! 2: * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED
! 3: * All rights reserved.
! 4: *
! 5: * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
! 6: * non-exclusive and royalty-free license to use, copy, modify and
! 7: * redistribute, solely for non-commercial and non-profit purposes, the
! 8: * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
! 9: * conditions of this Agreement. For the avoidance of doubt, you acquire
! 10: * only a limited right to use the SOFTWARE hereunder, and FLL or any
! 11: * third party developer retains all rights, including but not limited to
! 12: * copyrights, in and to the SOFTWARE.
! 13: *
! 14: * (1) FLL does not grant you a license in any way for commercial
! 15: * purposes. You may use the SOFTWARE only for non-commercial and
! 16: * non-profit purposes only, such as academic, research and internal
! 17: * business use.
! 18: * (2) The SOFTWARE is protected by the Copyright Law of Japan and
! 19: * international copyright treaties. If you make copies of the SOFTWARE,
! 20: * with or without modification, as permitted hereunder, you shall affix
! 21: * to all such copies of the SOFTWARE the above copyright notice.
! 22: * (3) An explicit reference to this SOFTWARE and its copyright owner
! 23: * shall be made on your publication or presentation in any form of the
! 24: * results obtained by use of the SOFTWARE.
! 25: * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
! 26: * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
! 27: * for such modification or the source code of the modified part of the
! 28: * SOFTWARE.
! 29: *
! 30: * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
! 31: * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
! 32: * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
! 33: * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
! 34: * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
! 35: * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
! 36: * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
! 37: * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
! 38: * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
! 39: * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
! 40: * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
! 41: * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
! 42: * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
! 43: * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
! 44: * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
! 45: * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
! 46: * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
! 47: *
! 48: * $OpenXM$
! 49: */
! 50: #include "ca.h"
! 51: #include "base.h"
! 52: #include "inline.h"
! 53:
! 54: int lm_lazy;
! 55:
! 56: static LM current_mod_lm;
! 57:
! 58: void random_lm(LM *r)
! 59: {
! 60: Z n;
! 61: LM s;
! 62:
! 63: if ( !current_mod_lm )
! 64: error("random_lm : current_mod_lm is not set");
! 65: randomz(z_bits((Q)current_mod_lm)+1,&n);
! 66: MKLM(BDY(n),s);
! 67: simplm_force(s,r);
! 68: }
! 69:
! 70: void setmod_lm(Z p)
! 71: {
! 72: MKLM(BDY(p),current_mod_lm);
! 73: setmod_lf(p);
! 74: }
! 75:
! 76: void getmod_lm(Z *p)
! 77: {
! 78: if ( !current_mod_lm )
! 79: *p = 0;
! 80: else
! 81: MPZTOZ(BDY(current_mod_lm),*p);
! 82: }
! 83:
! 84: void simplm(LM n,LM *r)
! 85: {
! 86: mpz_t rem;
! 87:
! 88: if ( !n || NID(n) != N_LM || !lm_lazy )
! 89: *r = n;
! 90: else {
! 91: mpz_init(rem);
! 92: mpz_mod(rem,BDY(n),BDY(current_mod_lm));
! 93: MKLM(rem,*r);
! 94: }
! 95: }
! 96:
! 97: void simplm_force(LM n,LM *r)
! 98: {
! 99: mpz_t rem;
! 100:
! 101: if ( !n || NID(n) != N_LM )
! 102: *r = n;
! 103: else {
! 104: mpz_init(rem);
! 105: mpz_mod(rem,BDY(n),BDY(current_mod_lm));
! 106: MKLM(rem,*r);
! 107: }
! 108: }
! 109:
! 110: void qtolm(Q q,LM *l)
! 111: {
! 112: LM nm,nm1,dn,dn1;
! 113:
! 114: if ( !q || (OID(q)==O_N && ((NID(q) == N_LM) || (NID(q) == N_GFPN))) ) { /* XXX */
! 115: *l = (LM)q;
! 116: } else if ( OID(q) == O_N && NID(q) == N_Q ) {
! 117: if ( q->z ) {
! 118: MKLM(BDY((Z)q),nm);
! 119: simplm(nm,l);
! 120: } else {
! 121: MKLM(mpq_numref(BDY(q)),nm);
! 122: simplm_force(nm,&nm1);
! 123: MKLM(mpq_denref(BDY(q)),dn);
! 124: simplm_force(nm,&dn1);
! 125: divlm(nm1,dn1,l);
! 126: }
! 127: } else
! 128: error("qtolm : invalid argument");
! 129: }
! 130:
! 131: #define NZLM(a) ((a)&&(NID(a)==N_LM))
! 132:
! 133: void addlm(LM a,LM b,LM *c)
! 134: {
! 135: mpz_t t;
! 136: LM s,z;
! 137:
! 138: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
! 139: if ( !a )
! 140: *c = b;
! 141: else if ( !b )
! 142: *c = a;
! 143: else {
! 144: mpz_init(t); mpz_add(t,BDY(a),BDY(b));
! 145: MKLM(t,s); simplm(s,c);
! 146: }
! 147: }
! 148:
! 149: void sublm(LM a,LM b,LM *c)
! 150: {
! 151: mpz_t t;
! 152: LM s,z;
! 153:
! 154: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
! 155: if ( !b )
! 156: *c = a;
! 157: else if ( !a )
! 158: chsgnlm(b,c);
! 159: else {
! 160: mpz_init(t); mpz_sub(t,BDY(a),BDY(b));
! 161: MKLM(t,s); simplm(s,c);
! 162: }
! 163: }
! 164:
! 165: void mullm(LM a,LM b,LM *c)
! 166: {
! 167: mpz_t t;
! 168: LM s,z;
! 169:
! 170: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
! 171: if ( !a || !b )
! 172: *c = 0;
! 173: else {
! 174: mpz_init(t); mpz_mul(t,BDY(a),BDY(b));
! 175: MKLM(t,s); simplm(s,c);
! 176: }
! 177: }
! 178:
! 179: void divlm(LM a,LM b,LM *c)
! 180: {
! 181: mpz_t t,u;
! 182: LM s,z;
! 183:
! 184: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
! 185: if ( !b )
! 186: error("divlm: division by 0");
! 187: else if ( !a )
! 188: *c = 0;
! 189: else {
! 190: mpz_init(t); mpz_invert(t,BDY(b),BDY(current_mod_lm));
! 191: mpz_init(u); mpz_mul(u,BDY(a),t);
! 192: MKLM(u,s); simplm(s,c);
! 193: }
! 194: }
! 195:
! 196: void chsgnlm(LM a,LM *c)
! 197: {
! 198: LM t;
! 199:
! 200: if ( !a )
! 201: *c = a;
! 202: else {
! 203: qtolm((Q)a,&t); a = t;
! 204: simplm_force(a,&t);
! 205: sublm(current_mod_lm,t,c);
! 206: }
! 207: }
! 208:
! 209: void pwrlm(LM a,Z b,LM *c)
! 210: {
! 211: mpz_t t;
! 212:
! 213: if ( !b )
! 214: MKLM(BDY(ONE),*c);
! 215: else if ( !a )
! 216: *c = 0;
! 217: else {
! 218: mpz_init(t); mpz_powm(t,BDY(a),BDY(b),BDY(current_mod_lm));
! 219: MKLM(t,*c);
! 220: }
! 221: }
! 222:
! 223: int cmplm(LM a,LM b)
! 224: {
! 225: LM z;
! 226: int sgn;
! 227:
! 228: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
! 229: if ( !a )
! 230: if ( !b )
! 231: return 0;
! 232: else
! 233: return -1;
! 234: else if ( !b )
! 235: return 1;
! 236: else {
! 237: sgn = mpz_cmp(BDY(a),BDY(b));
! 238: if ( sgn > 0 ) return 1;
! 239: else if ( sgn < 0 ) return -1;
! 240: else return 0;
! 241: }
! 242: }
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